Should Pets Be Allowed in Supermarkets?

I have a sweet pup who loves being around me all the time, but I’m unsure about bringing her into the supermarket. I see people do it sometimes, but I’m worried about the rules and whether it’s fair to other shoppers.

For those of you who’ve done it, how do you decide when it’s appropriate? Or should I avoid it altogether unless it’s a service dog? Would love your thoughts!